Mechanism for operating valves



(N Mod 1.

9 s. T. WELLMAN & H. HYATT. MECHANISM FOR OPERATING VALVES.

No. 442,929. Patented Dec. 16, 1890.

UNrrED STATES PATENT Canon. 7

SAMUEL T. XVELLMAN AND HARRY HYAT'I, OF CLEVELAND, OHIO.

MECHANISM FO R OPERATING VALVES.

sPBCIPICATION forming part of Letters ?atent No. 442,929, dated December 16, 1890.

Application filed April 21, 1890, Serial No. 348,802. (No model.)

To all whom it may concern.-

Be it known that we, SAMUEL 'l. WELLMAN and HARRY HYATT, citizens of the United States, and residents of Cleveland, county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Regenerative Furnaces, of which the following is a specification, the principle of the invention being herein explained, and the best mode in which we have contemplated applying that principle so as to distinguish it from other inventions.

Our invention relates to improvements in regenerative heating-furnaces, and more particularly to devices for regulating the admismission of air and gas into the same; and it has for its object to provide improved means for controlling and operating the closing and regulating valves by fluid-pressure and for adjusting the movement of the valves. These objects are attained in the devices illustrated in the accompanying drawings, which form a part of this specification, in which the same reference-letters indicate the same parts, and in which- Figure 1 represents a section of as much of the fines of a furnace and the valves thereto as will illustrate one form of connecting said valves to our regulating device; Fig. 2, a vertical section of the valve-controllin g cylinder, and Figs. 3 and at sectional views illustrating other forms of connection between the valves and the regulating device.

In the drawings, the letters CL indicate one set of fines which lead into the gas and air chambers b of the furnace, and a another set of fines opening into said chambers and controlled by the valves N.

The gas and air closing and regulating valves N are of the puppet or mushroom pattern and fit upon removable seats e in the top frames m of the flues. Said valves N have rods or stems o which slide in bearings in the tops of the valve-boxes and are suitably connected to the ends of piston-rods r, the pistons q of which slide in cylinders m, rigidly secured at any suitable and desired point or points. Said cylinders have screws p, provided'with hand-wheels 75 and threaded into the heads of the cylinders for the purpose of limiting the strokes of the pistons and inletpipes n at the opposite ends for the operating liquid medium.

The cylinders may be rigidly secured at one place and have cords or chains 12 attached to the ends of the piston-rods, carriedaround suitable guide-pulleys s, and attached to the ends of the valve rods or stems, as illustrated in Figs. 1 and 4, and in such cases the cylinders may be either grouped side by side at a central place, or they may be located upon a vertical support near the valves.

shown supported beneath a floor above the valve-box and the valve-stems are shown directly connected to the piston-rods.

It is obvious that the degree of opening of the valve may be controlled by the length of the stroke of the piston inthe cylinder, which again is controlled by the degree to which the screw is screwed into the cylinder. The amount of gas passing through the valves may thus be regulated by the hand-wheels and screws and the flow may be shut off or opened by means of the cylinders by withdrawing or admitting the fluid-actuating medium from or to the cylinders.

The foregoing description and accompanying drawings set forth in detail mechanism embodying our invent-ion. Change may be made therein, provided the principles of construction respectively recited in the following claims are retained and employed.

We therefore particularly point out and distinctly claim as our invention- 1. The combination of a closing or regulating valve, a piston controlled by fluid-pressure and connected to said valve, and an adjustable stop working in the cylinder and arranged to limit the throw of the piston and thus regulate the movement of the valve, substantially as set forth.

2. The combination of a pair of air and gas regulating valves, a piston moved in its cylinder by fluid-pressure and operatively connected to said valves, and an adjustable stop working in the cylinder and arranged to limit the throw of the piston, and thus regu late the movements of the connected valves, substantially as set forth.

3. The puppet-valve arranged to close one of the gas or air openings of the furnace, in

In Fig. 3 of the drawings the cylinders are combination with a piston actuated by fluiclbe our invention We have hereunto set our pressure and connected to the valve, and an hands this 10th day of April, A. D. 1890. adjustable screw-stop working in the cylint v r x Y der and arranged to be manipulated by hand i iv 5 to limit thethrow 0f the piston, and thus regulate the movement of the valve, snbstan- Witnesses: tially as set forth. J. B. FAY,

In testimony that We claim the foregoing to E. E. PATE. 

